Patent US2825857A successfully refreshed from Google Patents.
US2825857A
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US
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Contact structure
Assignee: International Business Machines Corp
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Filing: 1953-12-31
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Granted: 1958-03-04
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Salecker Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:26
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/20; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D99/00; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W72/00; H10W76/00; H10W76/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430028A
Cited
US2588956A
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US2609427A
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US2595475A
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US2634323A
Cited
US2672580A
Cited
US2696574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |